Grade Range
4th
Group Size
1-4 students
Active Time
60 minutes
Total Time
60 minutes
Area of Science
Human Biology & Health
Key Concepts
Breathing, the lungs
Learning Objectives
  • Understand why humans breathe, and why they developed body parts that support breathing.
  • Use the model made in this lesson to explain how humans breathe, and list the external and internal body parts of a human body used for breathing.
  • Explain how lung breathing is advantageous for humans or other large animals, and understand at least one other mechanism for breathing used by animals.
Credits
Sabine De Brabandere, PhD, Science Buddies
Materials needed for the 'Explore Shadows with aShadow Play' lesson.

Overview

Breathing occurs effortlessly, but did you ever wonder how we breathe? In this lesson, students will make a model to discover how air effortlessly flows in and out of our lungs. Next, students will compare lung breathing to other ways of breathing to discover reasons why humans might have developed lungs.

Remote learning: This lesson plan can be conducted remotely. Students can work individually and independently during the Explore section guided by the video and the Student Worksheet. A set of materials can be prepared in advance. The reflect section with a discussion can be done over a video call. The Engage section can be dropped entirely

NGSS Alignment

This lesson helps students prepare for these Next Generation Science Standards Performance Expectations:
  • 4-LS1-1. Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and reproduction.
This lesson focuses on these aspects of NGSS Three Dimensional Learning:

Science & Engineering Practices Disciplinary Core Ideas Crosscutting Concepts
Developing and Using Models. Use a model to test interactions concerning the functioning of a natural system.

Engaging in Argument from Evidence. Construct an argument with evidence, data, and/or a model.
LS1.A: Structure and Function. Plants and animals have both internal and external structures that serve various functions in growth, survival, behavior, and reproduction.
Systems and System Models. A system can be described in terms of its components and their interactions.

Materials


Materials needed for the 'How We Breath' lesson.

Teacher or another adult:

  • Utility knife

Per group of up to four students:

  • Disposable, empty transparent bottle (10–16 fluid ounces) made of hard plastic (such as a sports drink bottle)
  • Two balloons, with a few extra in case one pops (8-inch balloons work well)
  • Scissors
  • Optional: Tape

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Grade Range
4th
Group Size
1-4 students
Active Time
60 minutes
Total Time
60 minutes
Area of Science
Human Biology & Health
Key Concepts
Breathing, the lungs
Credits
Sabine De Brabandere, PhD, Science Buddies
Learning Objectives
  • Understand why humans breathe, and why they developed body parts that support breathing.
  • Use the model made in this lesson to explain how humans breathe, and list the external and internal body parts of a human body used for breathing.
  • Explain how lung breathing is advantageous for humans or other large animals, and understand at least one other mechanism for breathing used by animals.
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